Appears you may be ok...
NCEES CANDIDATE AGREEMENT FOR PENCIL-AND PAPER EXAMS
Licensure candidates qualified to take any NCEES pencil-and-paper exam must review this agreement and the NCEES Examinee Guide before sitting for the exam. Examinees are required to sign their exam answer sheet before the exam starts to affirm that they have been provided this information, have read and understand the material, and agree to abide by the stated policies and procedures, which apply to all NCEES exams. Full compliance is required.
It just says you have to sign... nothing about the date; however, as already noted, I would contact NCEES.